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SHAWANO COUNTY, Wis. — Prosecutors charged a Wisconsin man with tying up a child in a basement for days and abusing him, WISN reports.

Nathan Pogrant, 36, who has a history of crimes against children and is listed on the sex offender registry, is facing 12 counts in the 18-page complaint.

Passersby spotted the boy walking on Highway 45 near County Road O on Oct. 5.

The boy, who prosecutors said had just escaped the horrible conditions, told them Pogrant put a makeshift straitjacket, made from a hooded sweatshirt, on the boy and “tied a cord around his body,” with bike locks and left the boy to use the bathroom on himself.

The boy added Pogrant and the boy’s mother would “turn off the lights and turn up the music so they wouldn’t hear him crying.”

According to the complaint, investigators found several bruises on the boy’s face and body.

He told them he had only been fed a peanut butter sandwich the entire previous day. When the boy would steal food, the complaint said, “Nathan told him that they would break his fingers if he steals more food.”

The complaint said the boy escaped the basement while the adults were asleep.

When asked why it happened and why she didn’t stop the abuse, the complaint said the boy’s mother replied, “I don’t know.”

The complaint implies wrongdoing on the mother’s part, however, she is not currently facing charges.

While Pogrant is a convicted sex offender, the complaint does not suggest the boy was sexually assaulted.

Still, Pogrant, if convicted of the 12 charges in the complaint, could spend the rest of his life in prison.